Hi all! 
  
My wifi doesn't work so here's what I did. 
  
I downloaded the beta 6 kernel extensions from Mercury Squad and "installed" them (it was more like moving them with super user privileges) in the appropriate directory. 
  
Then I had a system pop up telling me the kext were improperly installed. I removed them, downloaded them again and re-copied them. This time no error message but still no wifi. 
  
Here is a sample of the system log: 
Apr 20 09:41:12 My-Mac-Pro com.apple.kextcache[996]: VoodooIntel3945.kext is not valid; omitting from mkext. 
(kernel?) log 
11-04-20 4:06:33 PM	kernel	VoodooTSCSyn::doTsc(): stamp_tsc was called: 2 times 
11-04-20 4:06:33 PM	kernel	VoodooHDADevice[0x24bf4000]::init 
11-04-20 4:06:33 PM	kernel	Kext org.voodoo.wireless.hal.Intel3945 - library kext org.voodoo.wireless not found. 
11-04-20 4:06:33 PM	kernel	Can't load kext org.voodoo.wireless.hal.Intel3945 - failed to resolve library dependencies. 
11-04-20 4:06:33 PM	kernel	Kext org.voodoo.wireless.hal.Intel3945 failed to load (0xdc00800e). 
11-04-20 4:06:33 PM	kernel	Failed to load kext org.voodoo.wireless.hal.Intel3945 (error 0xdc00800e). 
11-04-20 4:06:33 PM	kernel	Couldn't alloc class "VoodooIntel3945" 
  
I made sure the wifi switch in on and even tried disabling it in the BIOS. Where should I go next? 
  
  
Regards, 
  
Francois